The HA-4900 series are monolithic, quad, precision comparators
offering fast response time, low offset voltage, low offset current
and virtually no channel-to-channel crosstalk for applications
requiring accurate, high speed, signal level detection. These
comparators can sense signals at ground level while being operated
from either a single +5V supply (digital systems) or from dual
supplies (analog networks) up to ±15V. The HA-4900 series
contains a unique current driven output stage which can be
connected to logic system supplies (VLOGIC+ and VLOGIC-) to
make the output levels directly compatible (no external
components needed) with any standard logic or special system
logic levels. In combination analog/digital systems, the design
employed in the HA-4900 series input and output stages prevents
troublesome ground coupling of signals between analog and digital
portions of the system.
These comparators’ combination of features make them ideal
components for signal detection and processing in data acquisition
systems, test equipment and microprocessor/analog signal
interface networks.
For military grade product, refer to the HA-4902/883 data sheet.

Features
• Fast Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130ns
• Low Offset Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0mV
• Low Offset Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10nA
• Single or Dual Voltage Supply Operation
• Selectable Output Logic Levels
• Active Pull-Up/Pull-Down Output Circuit. No External Resistors Required
• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
• Threshold Detector
• Zero Crossing Detector
• Window Detector
• Analog Interfaces for Microprocessors
• High Stability Oscillators
• Logic System Interfaces